Greek Ferries Guide: How to Book Tickets and Travel Smart
Island hopping in Greece almost always means a ferry. Whether you are sailing from Athens to Santorini, moving between Paros and Naxos, or taking a short boat to Aegina for the day, the right ticket and a clear plan at the port can save you hours of stress.
Ferries are only one part of moving around the country, and many trips mix boats with flights, buses and rental cars. If you are still weighing those options, our overview of getting around Greece puts them side by side. The rest of this article stays at sea level: how tickets work, when to book, which seat or cabin to pick, how to handle Piraeus, and why late October and November feel so different from summer.
How Greek ferry tickets work
Most domestic tickets are for a seat on a specific sailing, ship and date, either numbered or open seating. The booking shows the operator, the departure and arrival ports, the departure time and your class. The names on it should match the passport or ID each traveller brings to the gangway.
You can keep an e-ticket on your phone, collect a paper ticket from a port agency, or buy at the port on the day if seats remain. Booking online is the normal route on busy lines, and you can compare sailings and buy Greek ferry tickets in one search. Many large operators also offer web check-in from 48 hours down to about 2 hours before departure, after which you simply show the e-ticket and your ID when boarding.
Read the change and cancellation rules before you pay. Flexible fares cost more but are easy to move, while the cheapest economy tickets can be hard or expensive to change in high season. If your dates might shift, the policy matters more than saving a few euros.
When to book: summer vs late autumn
In July and August, and around Greek Easter and the 15 August holiday, popular routes to Santorini and Mykonos can sell out, starting with cabins and vehicle spaces. Book several weeks ahead in peak summer, and earlier still if you need a car space or a private cabin.
In May, June, September and much of October you usually have more choice. One to two weeks ahead is often enough for foot passengers, although weekend sailings and high-speed boats still fill first.
From late October through winter, many routes run far less often. Some lines drop to a few sailings a week and high-speed services may stop altogether, so book as soon as your dates are firm and leave buffer days between islands. Choosing islands with a year-round population helps too, because hotels, tavernas and boat links there keep going after the summer crowds leave.
Conventional ferry or high-speed boat?
Large conventional ferries are usually cheaper, carry cars and ride more calmly in moderate wind. The journey takes longer, but you get open decks, cafes and often cabins. High-speed catamarans cut the travel time and cost more, yet they cancel more often in rough weather and have little outdoor space.
On overnight runs to Crete or the Dodecanese, a cabin can be well worth it. For a daytime hop of a few hours, an airline-style seat or open economy seating is usually enough. If you get seasick easily, pick a larger ship and sit near the middle of the vessel.
What to choose on the ticket
Seat classes
Economy or deck is the basic foot-passenger fare. Numbered airline-style seats cost a little more and guarantee somewhere to sit, while business or VIP lounges add quieter seating and sometimes snacks. The exact names vary from ship to ship.
Cabins
Internal cabins have no window and external cabins do. Shared four-berth cabins are common on long overnight routes. Accessible and pet-friendly cabins exist on some ships but are few, so reserve them early if you need one.
Cars, bikes, and pets
Vehicle tickets are separate from passenger tickets, and garage space sells out before seats do. If you plan to drive between islands, book the car as soon as your dates are set and carry the registration documents and your driving licence. Pets usually need a note on the booking and may have to travel in a kennel or a designated cabin, so check the terms for your sailing.
How to book without stress
Start with the route and date, then compare departure times and ship types. Confirm the exact port: major Cyclades and Crete lines from Athens almost always leave from Piraeus, not the airport. Enter every passenger exactly as on their ID, choose seats or cabins, add a vehicle if needed, then pay and save the confirmation offline.
Before you lock in hotels on a tight schedule, check the return or onward boat as well. Outside summer, the ferry you assume runs daily may only sail on certain weekdays.
Piraeus and other ports: gates, timing, transfers
Piraeus is huge, with numbered gates for different island groups, and your ticket or boarding pass shows which one to use. Many Cyclades sailings leave from around E6 for foot passengers and E7 for vehicles, while some Dodecanese ships use E1 and some Saronic boats use E9. Gates do change, so arrive early and follow the screens and staff.
Plan to reach the port 45 to 60 minutes before departure on foot, and earlier with a car, often 90 minutes or more in summer. Metro Line 1 and the suburban railway run to Piraeus from central Athens, and taxis make sense with heavy bags. Leave extra time if you are coming straight from the airport.
On the islands, the port is not always next to the main town. Santorini ferries use Athinios, a working harbour below the caldera villages, so you need a bus or transfer up the cliff. On Mykonos, Paros and Naxos the port sits closer to town but gets hectic when several ships arrive together. Short Saronic hops to Hydra or Spetses are easy day trips from Athens, with frequent boats in season.
What to pack for the crossing
Bring a light layer even in summer, because the wind on deck is cooler than on the quay. In late autumn, pack a proper jacket and closed shoes. Carry water, snacks, a power bank and motion-sickness tablets if you need them. Conventional ships usually allow generous luggage, often around 50 kg per person, but keep valuables with you rather than leaving bags alone in a lounge.
Download your e-ticket and save the booking reference offline, since phone signal can be weak around the port and at sea. If you use web check-in, do it inside the window, usually from 48 to 2 hours before sailing, so you avoid a last-minute queue.
Weather, cancellations, and buffer days
Strong winds can delay or cancel sailings, and high-speed craft are affected first. Bigger ships cope better but are not immune. Build at least one spare night into autumn and winter island hopping, and avoid a same-day international flight after a ferry arrival when the forecast looks rough. Late in the year it pays to read up on Greek weather in November before deciding how tightly to pack the itinerary.
Check port announcements and the alerts on your booking on the day you travel. If a sailing is cancelled, you are usually moved to the next available ship under the ticket rules, but missed hotel nights and tours are your own cost unless those providers help.
Money-saving tips
Travel midweek when you can, since weekend boats are busier and dearer. Choose a conventional ferry over a high-speed boat if time allows, and on short crossings a deck or economy seat beats a cabin. Book early for summer, but in quiet months compare a few nearby dates for a better fare.
Flying into one island and out of another cuts backtracking, as long as the ferry links between them run on your dates. Planning ferries, hotels and flights together avoids most of the expensive surprises.
Sample routes people book most
Athens to Santorini: long day on a conventional ferry, or a faster high-speed option when it runs.
Athens to Mykonos: similar choice of ship types; book early in July and August.
Central Cyclades loop: Paros, Naxos, Ios, and Milos with short hops between them.
Syros as a year-round hub with solid ferry links and a lived-in capital.
Longer hauls to Crete or Rhodes: consider a cabin on overnight sailings.
West coast: Corfu links more often via Igoumenitsa than via a single hop from Athens.
Day-of boarding checklist
Confirm the ship name, departure time, and gate the morning of travel.
Arrive early: about 45 to 60 minutes on foot, longer with a car.
Have e-tickets or paper tickets ready, plus passport or ID for every passenger.
Keep one bag with meds, chargers, and documents with you on board.
Ask crew where to stow large luggage and where your seat or cabin is.
On arrival, wait for the vehicle ramp announcement if you have a car; foot passengers follow the marked exit.
Photo: Leeturtle via Wikimedia Commons (CC BY-SA 4.0).
